Shigeki Numaga

Title: Shigeki Numaga: Innovator in Semiconductor Technology

Introduction

Shigeki Numaga is a prominent inventor based in Amimachi, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and functionality of semiconductor devices.

Latest Patents

One of his latest patents is a semiconductor memory device with antifuse. The objective of this invention is to provide a type of semiconductor memory device whose antifuse can be formed without any additional film manufacturing process. A first electrode is formed by a first polysilicon film on a semiconductor substrate, and a second polysilicon film is deposited on the surface of the first polysilicon film. The first electrode, a dielectric film formed on the surface of the first electrode, and a second electrode form a capacitor in the memory cell. An antifuse, with the same configuration as the capacitor, is formed in the semiconductor memory device. Because there is no need to use an additional film, the manufacturing cost is low, and the antifuse can be easily arranged. It is also possible to form the antifuse by forming instead of depositing the second polysilicon film on the surface of the first polysilicon film.

Another notable patent is for a spatial light modulator having redundant memory cells. This invention features a spatial light modulator of the DMD type, which has an array of memory cells controlling an array of pixels. The memory cell array includes several integral, interleaved spare rows of memory cells that can be selectively utilized to replace a defective row of primary memory cells. A fused row address mapping logic circuit controls the implementation of memory cells, as well as the mapping of address signals to the memory cells based on inputs received from a row decoder circuit. This circuit is transparent to the row address decoder circuit, making it suitable for large spatial light modulators compatible with high-definition television (HDTV). High yield devices can be obtained with this invention.

Career Highlights

Shigeki Numaga has worked with notable companies such as Texas Instruments Corporation and Hitachi, Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.

Collaborations

Throughout his career, Numaga has collaborated with talented individuals, including Takashi Inui and Yukihide Suzuki. These partnerships have fostered a creative environment that